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Here's a Dash app that use Dask & Datashader for fast aggregations on +40M rows: https://dash-gallery.plotly.host/dash-world-cell-towers https://dash-gallery.pl
by jparmer 6y ago
Here's a Dash app that use Dask & Datashader for fast aggregations on +40M rows: https://dash-gallery.plotly.host/dash-world-cell-towers https://dash-gallery.plotly.host/dash-world-cell-towers
The source code, which can be used as a Dash + Dask boilerplate, is here: https://github.com/plotly/dash-world-cell-towers https://github.com/plotly/dash-world-cell-towers
Feel free to ask questions at community.plot.ly
- vamega 6y agoI don't think that actually plots the 40M points, just aggregates them in Python and plots a small section of that data on the website?
- kylebarron 6y agoI believe so. An optimization of Datashader is that it _doesn't_ plot all the points, but rather optimizes which points actually influence pixel values.
- gesman 6y agoIt plots cell towers in the middle of my residential neighborhood where i absolutely sure there aren't any
- leeoniya 6y agomaybe they're Stingrays ;) https://en.m.wikipedia.org/wiki/Stingray_phone_tracker https://en.m.wikipedia.org/wiki/Stingray_phone_tracker
- gesman 6y agoMaybe. However cellmapper.net shows few cell towers where they actually exists and this map doesn't show them. Credibility?
- jcims 6y agohttps://community.opencellid.org/t/range-of-a-tower/370/2 https://community.opencellid.org/t/range-of-a-tower/370/2 >The range field tells you the approximate area within which the cell could be, in metres. This is effectively an estimate of how accurate the location is. There's one marked in the middle of a corn field near me with a range of 48,000m. ?